Fatigue crack growth based on the dislocation-free zone (DFZ) model

Jingran Ge; Yi Sun; Ting Wang; Shiwei Liu; Yarui Bai

doi:10.1016/j.engfracmech.2015.10.001

Fatigue crack growth based on the dislocation-free zone (DFZ) model

Jingran Ge
, Yi Sun^*
, Ting Wang
, Shiwei Liu
, Yarui Bai

^*Corresponding author for this work

School of Astronautics

Beijing Institute of Aerospace Control Devices
Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

In the present work, a microscopic mechanism model is presented to predict fatigue crack growth, which is developed based on the combination of fracture physics and cyclic plasticity effect. The gradual degradation of materials near crack tip is regarded as a result of cyclic plastic deformation. The J-integral within cohesive zone under cyclic loading is selected as the crack growth criterion, and determined based on dislocation-free zone and cohesive theory. The dislocation-free zone model is validated with experimental data from literature. It has been shown that the results predicted by the proposed model agree well with the experiment.

Original language	English
Pages (from-to)	111-118
Number of pages	8
Journal	Engineering Fracture Mechanics
Volume	149
DOIs	https://doi.org/10.1016/j.engfracmech.2015.10.001
State	Published - 1 Nov 2015

Keywords

Cyclic plasticity
Dislocation-free zone
Fatigue crack growth
J-integral

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10.1016/j.engfracmech.2015.10.001

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title = "Fatigue crack growth based on the dislocation-free zone (DFZ) model",

abstract = "In the present work, a microscopic mechanism model is presented to predict fatigue crack growth, which is developed based on the combination of fracture physics and cyclic plasticity effect. The gradual degradation of materials near crack tip is regarded as a result of cyclic plastic deformation. The J-integral within cohesive zone under cyclic loading is selected as the crack growth criterion, and determined based on dislocation-free zone and cohesive theory. The dislocation-free zone model is validated with experimental data from literature. It has been shown that the results predicted by the proposed model agree well with the experiment.",

keywords = "Cyclic plasticity, Dislocation-free zone, Fatigue crack growth, J-integral",

author = "Jingran Ge and Yi Sun and Ting Wang and Shiwei Liu and Yarui Bai",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd.",

year = "2015",

month = nov,

day = "1",

doi = "10.1016/j.engfracmech.2015.10.001",

language = "英语",

volume = "149",

pages = "111--118",

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TY - JOUR

T1 - Fatigue crack growth based on the dislocation-free zone (DFZ) model

AU - Ge, Jingran

AU - Sun, Yi

AU - Wang, Ting

AU - Liu, Shiwei

AU - Bai, Yarui

PY - 2015/11/1

Y1 - 2015/11/1

N2 - In the present work, a microscopic mechanism model is presented to predict fatigue crack growth, which is developed based on the combination of fracture physics and cyclic plasticity effect. The gradual degradation of materials near crack tip is regarded as a result of cyclic plastic deformation. The J-integral within cohesive zone under cyclic loading is selected as the crack growth criterion, and determined based on dislocation-free zone and cohesive theory. The dislocation-free zone model is validated with experimental data from literature. It has been shown that the results predicted by the proposed model agree well with the experiment.

AB - In the present work, a microscopic mechanism model is presented to predict fatigue crack growth, which is developed based on the combination of fracture physics and cyclic plasticity effect. The gradual degradation of materials near crack tip is regarded as a result of cyclic plastic deformation. The J-integral within cohesive zone under cyclic loading is selected as the crack growth criterion, and determined based on dislocation-free zone and cohesive theory. The dislocation-free zone model is validated with experimental data from literature. It has been shown that the results predicted by the proposed model agree well with the experiment.

KW - Cyclic plasticity

KW - Dislocation-free zone

KW - Fatigue crack growth

KW - J-integral

UR - https://www.scopus.com/pages/publications/84945192870

U2 - 10.1016/j.engfracmech.2015.10.001

DO - 10.1016/j.engfracmech.2015.10.001

M3 - 文章

AN - SCOPUS:84945192870

SN - 0013-7944

VL - 149

SP - 111

EP - 118

JO - Engineering Fracture Mechanics

JF - Engineering Fracture Mechanics

ER -

Fatigue crack growth based on the dislocation-free zone (DFZ) model

Abstract

Keywords

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